Features: brand new and high quality Bike helmet it consists of a durable thickened PC for shell, high density EPS foam & soft inner liner padding for better impact reduction and for head for protection in the event of a crash,bike helmet suitable for adult and young riders. Cycling helmet can be adjusted within a given range (58-61cm/22-24inch). In addition to adjusting the size of the side straps, there is a swivel adjustment dial at the end that allows you to swivel to adjust the inner size of the helmet. Bicycle helmet is professionally designed with aerodynamics and ventilation to pull Cool Air in through the front and hot air out of the bike helmet through internal air channels to keep you cool on long cycling. Soft, sweat-absorbing, removable and washable padding and removable visor that can be removed in seconds to block the for sun and rain from your eyes and increase your visibility. Suitable for ladies men, womens and teens. Suitable for rollerblad, skateboard, electric, hiking, mountain road cycling and more. Cycling helmet adults is designed to be worn ergonomically and is designed to be lightweight, without placing any strain on the cyclists for head. Specifications: Material: PC+EPS Color: Dark Green/Black/Blue Package Weight: approx.450g Size: approx.34x22x19cm/13.38x8.66x7.48in for Head Circumference: approx.58-61cm/22.83-24.01in Inner Diameter: approx.17x22cm/6.69x8.66in Ventilation Holes: 18Pcs Note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1Pc x Bike Helmet